An impact report is a document a charity produces voluntarily for its donors, funders and supporters, setting out what its work achieved over a period. There is no legal requirement to produce one. The statutory document is the trustees’ annual report, and the two are not interchangeable.
You do not need an impact measurement system to write a good one. What you need is a clear account of what you did, honesty about what changed, and the discipline to keep those separate from what you merely hope is true.
If reporting to funders is one of several things your charity is trying to get straight, you can book a free clarity call.
Is an impact report worth producing?
Start with the question most guides skip, because the answer is sometimes no.
It earns its place when you have funders who have asked for one, when you are about to apply for grants that will want evidence of a track record, or when supporters who gave last year have heard nothing since. Those are reasons with a named audience behind them.
It does not earn its place when your charity is six months old and has little to report, or when the only reason is that other charities publish one. The cost is not design or printing. It is the time of the person who would otherwise be delivering the service, and in a charity with two or three part-time staff, forty hours is a lot of delivery.
A weak report can also do damage that publishing nothing would not. Funders read a great many of these and they recognise the pattern: large round numbers, no baseline, every programme a success, photos doing the work that evidence should. A charity that publishes that is telling an experienced grants officer something it did not mean to.
What you can honestly say without a measurement system
Small charities usually have more usable material than they think, and undersell it because they believe only formal evaluation counts.
Sort what you know into three layers.
The first is what you did.
Sessions run, people seen, meals delivered, calls answered, hours of advice given. This comes out of your own records, and it is factual. That is not impact, though it is the floor everything else stands on.
The second is what you observed changing.
This is the layer charities skip because nobody measured it with an instrument. If twelve of the fourteen young people who started your programme completed it, that is a fact you know. If referrals from one GP surgery rose after you opened a second collection point, you noticed something real. Retention, repeat attendance, referral patterns, waiting list length, what people said at the end of a session: all of it is evidence, and it is the evidence a small charity actually has.
The third is what you believe but cannot show.
Write it as belief. “We think the group is reducing isolation for the people who attend, though we have not yet found a way to test that” is a sentence a funder can respect. The same claim stated as fact, resting on nothing, is what gets a report quietly filed.
Picture a charity running a weekly support group for carers. No outcome framework, no surveys, no baseline. What it does have: attendance records showing that of the twenty-two people who came in the first month, sixteen were still coming nine months later; three volunteers who joined after first attending; and a district nurse asking whether she can refer directly. None of that was measured. All of it is true, checkable, and worth reporting.
Naming what you cannot yet show, and saying what you intend to do about it, reads as competence. Claiming what you cannot show reads as inexperience.
Reporting problems are usually not reporting problems. A charity that struggles to say what changed often has not settled what it was trying to change, and that surfaces as a difficult impact report rather than as a strategy question. If writing one has been harder than it should be, a free 30-minute clarity call is a sensible place to take it.
What goes in the report
Six components. A small charity can cover all of them in four pages.
1) What you set out to do
Open with your aims for the period. This gives everything that follows something to be measured against. A report that lists achievements without saying what was intended leaves the reader unable to judge whether the year went well or badly. Two or three sentences will do it.
2) What you did
The activity: sessions run, people seen, meals delivered, calls answered. This comes straight from your records and needs no interpretation. Resist inflating it. A funder who reads “supported over 500 people” from a charity with one part-time worker starts wondering what “supported” is doing in that sentence.
3) What changed
The three layers, kept visibly apart: what you can count, what you observed, and what you believe. Separating them is what makes the report credible. A reader who can tell which is which will trust all three; a reader who cannot will discount the lot.
4) What you learned
What the period taught you, including the things that did not work. This is the section funders read most closely, and charities write most defensively, which is why it gets its own treatment further down.
5) What comes next
Where the charity is heading and what it needs to get there. Anyone reading a report about last year is deciding about next year, so this section is doing the asking whether or not it asks directly.
6) Where the money went
A plain summary of income and spending. Donors who gave want to know where it went, and a straightforward set of figures does more for trust than another page of photographs.
Keep the whole thing shorter than feels right. Four pages a trustee can hand to a funder beats twenty that took a quarter to produce, and nobody finishes. Where it lives matters too: a page on your website that stays findable is worth more than a PDF attached to a single email.
Using beneficiary stories without causing harm
A named story is the part of the report people remember. It is also the part most likely to cause harm.
Consent has to be informed and specific. The person needs to know where their story will appear, who will see it, how long it will stay there, and that they can change their mind. Consent given for a newsletter is not consent for a website that stays up for five years. Consent can be withdrawn, which means your report has to be something you can take down.
There is a power problem underneath this that no policy solves. Someone still receiving your service may feel unable to refuse. If the person asking is also the person who provides their support, the answer you get is not a free one. Separate those roles where you can.
Where a child or an adult at risk is involved, your safeguarding policies apply alongside your data protection ones. Parental or guardian consent is the start, not the end. The question worth asking is whether publishing this serves the person in it, or only the charity.
Anonymise properly. Changing a name achieves nothing if the age, town, condition and circumstances identify someone to anyone local. Photos are personal data. And a composite assembled from several people is not a case study; if you compose, say so in the report.
The ICO publishes guidance on consent and personal data that is worth reading before you write rather than after.
Being honest when the results are mixed
A report in which everything worked is a marketing document, and it reads like one.
If a programme underperformed, say what happened, what you think caused it, and what you changed. A charity that ran a project, found attendance at half its projection, worked out the venue was unreachable by bus, and moved it, has shown a funder something more useful than an unbroken run of successes.
There is a limit. This is not an exercise in self-criticism, and a report that dwells on failure without showing judgement is its own kind of unconvincing. The test is whether a reader finishes with an accurate picture. Two or three honest paragraphs about what did not go to plan will usually do it.
Your trustees should approve the report before it goes out. It is published in the charity’s name and makes claims on the charity’s behalf, which makes it a board matter rather than a communications one.
This article is general information for UK charities and not advice on any specific situation. On consent, personal data and safeguarding, check the ICO’s guidance and your own safeguarding policy, and take advice where a case is difficult.
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